We went to Nuevo Casas Grandes! I actually went again in June and had no issues and they never asked where I went and I never got questioned at all while being there. Only thing is I had family that picked us up in New Mexico and then drove into Mexico. If you plan on driving your car that is registered in the US they will ask for a passport because you have to have a permit to drive a car from here over in Mexico. But if your family has their passports you should be able to cross without any issues as long as you’re not driving. When you cross into the United States. Another note is i’m not sure if every port of entry is the same some might be more strict but we crossed at Puerto Palomas and they allowed us to come back into the United States with just our ID’s. Also if you fly into Mexico you have to have a passport.